Stop motion for looms for weaving



Aug. 5, 1930.

T. FILLING LWZAI'Ffi STOP MOTION FOR LOOMS FOR WEAVING Filed Dec; 4, 1929 s Sheets-Shea: l

2 E? X G X E INVENTOR Thcfi-nas P1 lling,

T. FILLING STOP MOTION FOR LOOMS FOR WEAVING Aug. 5, 1930. I

Filed Dec 4, 1929 5 Sheets-Shee 2 INVENTOR Aug. 5, 1930. T. PlLLlNG 1 1,772,430

' STOP MOTION FOR LQOMS FOR WEAVING Filed D60. 4, 1.929 5 Sheets-Sheet 3 INVENTOR ATTORNEY Aug. 5, 1930.

T. FILLING 1,772,430

- STOP MOTION FOR LOOMS FOR WEAVING Fi-ledDec. 4, 1929 5 Sheets-Sheet 4 lNVENTOR.

Thomas Pi11ing,

ATTORNEY Aug. 5,1930. T. PILLING 1,772,430

' STOP MOTION FOR LOOMS FOR WEAVING mvsmon.

Thomas P i 1 1 ing,

ATTORNEY Patented Aug. 5, 1930 UNITED-STATES PATENT OFFICE".

THO MAS PILILING, F STALYBRIDGE, ENGLAND s'ror MOTION FOR LOOMS r03 WEAVING Applieation filed December 4, 1929, Serial'No. 411,548, and in: Great Britain-November 17, 1928.

This invention relates. to improvements in stop motions for looms for Weaving.

The object of the invention is to provide means whereby the loom is stopped just before the weft bobbin or cop is empty thereby obviating the necessity of turning back the loom to find the end after the weft has be come exhausted or on the other hand of stopping the loom several picks beforethe weft is has become exhausted which results'in considerable waste of weft on the bobbin or cop. According to the invention a coarse pitched screw is driven through friction gear from the take-up roller of the loom and a nut is mounted on the screw so that as the latter rotates it travels along the screw until a rod carried by the nut engages a stop 'adjustably mounted on a slide. so that its position can be adjusted according to the length of the yarn on thebobbin or cop; In practice cops or bobbins'of the same count ofyarn are of approximately equal length so that when 2 once thestop has been set for weaving a particular cloth it will not require to be reset while the whole length of the cloth is being woven. The slide on which the adjustable stop is mounted carries an arm which is flexi bly connected to the weft fork carrier so that when the rod on the nut engages the i 0 stop the movement of the slide tightens the" flexible connection andcauses the weft fork to remain in the path of the weft hammer and the weft lever to be operated to stop the loom. In order that-the stop motion may be automatically reset to its original position after the loom has stopped, the end of the screw is mounted in a springcontrolled bearing so that when the pressure on the bearing is released the friction driving gears will be disengaged and a spring which is gradually tightened as the screw rotates, will cause the latter to rotate in the opposite direction until the nut is returned to its starting. position.

' The invention will be described with reference to the accompanying drawings Fig. 1 is'aside elevation showing the attachment on a loom.

Fig. 2 is a plan of same. Fig. 3 is a side elevation. i

Figf isa perspective view showing conmotion to the weft fork carrier.

Fig. 15. Side elevation partly in section of the attachment. 5'

Fig. 6 is a plan of same. I Fig.- 7 is a side elevationof same.

a A casing A is aflixed by brackets .A tothe breast beam X of the loombeing bolted to the brackets by bolts a passing through slots a a in the casing to allow of adjustment of the la'tteri v a i A coarse pitched screw spindle B is mounted on bearings in the casing A and carries a nut C to which is connected an upwardly 7 projecting rod (l which projects through a slot a in'a'slide A mounted on the top of the casing'A so that it canslide thereon. The slide is formed with a longitudinal slot a in which is mounted an adjustable stop C which is engaged bythe vertical arm C after the nut C has'moved apredetermined distance along the screw B. i

A'friction wheel D is mounted on one end of the screw B and engages with and is driven by awheel D mounted on the end of the taking up roller X of theloom. The

wheel D .on the taking up roller is preferably grooved and the periphery of the wheel D is shaped to fit into the groove of the wheel wheel DR An arm or projection E is lnounted on the top or slide A and is connected to the weft fork carrierX by a flexible connection'such as the cord E so that when the rod comes in contact with the stop G and causes the slide A to move with it the cord IE will be tightened and any further movement will cause the weft fork to remain in the path of the weft hammer X and consequently the weft lever X will be operated to stop the loom. Y Y I V The end of the screwedfspindle B carrying the friction wheel D is mounted in a bearing 6 which can slide in a slot a inthe 95 I end of a casing A. The bearing 6 is affixed to a rod F projecting upwardly through a slot a in the end of theslide A A coil spring i around the upper part of the rod F;;.tends to raisethe latter and with it the bearing 6 and the end of the screwed spindle B.

A lever G is bolted at one end of the weft lever X and at the other end bears on a knob f at the upper end of the-rod F during running of the loom. The pressure of this lever Gris sufficient to overcome the upward pressure of the spring f so that the bearing 5 e is pressed downwards and the friction wheel D is pressed against the friction wheel D with suflicient force. to be driven thereby" When the weft lever has been operated to stop the loom the end 9 of the lever G slides off the knob fand the spring F lifts the rod 7 F and thebearing b so that there is no pressurebetween the wheel D and the wheel D One end of a spring F is attached to. the

end of the screwed spindle Band the other end is aifixed' to the casing A so that as the spindle 13 rotates the spring F? will tighten up. \Vhenthe loom is stopped and thepresthat as the screw rotates the spring will be coiled up and when the weft fork lever is moved to stop the loom and the lever affixed to the weft fork lever moved away from the vertical rod the spring controlling the latter will cause the bearing of the screw to lift and the pressure between the two friction wheels to be removed so that the tension in the coiled spring will rotate theserew in the backward direction and the nut will return to its starting position.

In testimony whereof I have hereunto set my hand.

THOMAS sure between thefriction wheels D and D I is removed the spring F will automatically rotate the spindle Bin the reverse direction I I to return the nut C to itsinitial position.

lVhat I claim as my invention and-desire to protect by Letters Patent is: s

A stop motion for looms for weaving comingcarrier, weft fork, weft hammer, weft lever andtaking .uprroller of the loom of a prising the combination with the weft forkfriction wheel mounted on the end of the taking uproller, a second friction wheel 'engaging with the first friction wheel, a coarse pitchedscrewon the end of which the second friction wheel is mounted, a nut mounted on the screw so that as the latterirotates the nut will travelalong it,-a projecting rod-carried a r a by the nut, a sliding member having a slot in which the projecting rod passes, a stop .7

adjustable in said slot and adapted to be engaged by the rod on the'nut, a projection on 1 v the sliding member,- a flexlble connection between theprojection on the sliding member moved and tighten .the flexible-connection, the weft fork carrier will be prevented from moving and the weft fork will remain in the path of the wefthammer andthe Weft lever consequently canbe operated to stop the and the weft fork carrier so that when the nut has traversed along the screw a distance to 'bring'the rod into engagement with the ad- "justable stop the sliding member will be i ing,a spring acting to raise the rod, a 'lever l affixed tothe weft fork lever and bearing 'L against the top of therod when the loom is running to keep the rod depressed and the bearing in such position that friction wheel onthe end of the screw is pressed against the jfllCtlOIl wheel on-the end of the taking up roller, a spring one end of which is affixed to the screw and the other end of which is Huzchoredto astationary part of'the loom so iii-d 

